Swift class 多重继承

Question

我创建了一个像这样的 class：

class number1: UIScrollView {

init() {
    super.init(frame: CGRect(x: 9, y: 780, width: 1024, height: 267))
    self.contentSize = CGSize(width: 100, height: 267)
    self.backgroundColor = UIColor.clear
    self.autoresizingMask = UIView.AutoresizingMask(rawValue: UIView.AutoresizingMask.RawValue(UInt8(UIView.AutoresizingMask.flexibleWidth.rawValue)))

    //followed by do blablabla I dont want in my new class

}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

现在我想要第二个 class 类似于我的第一个 class 但没有 blablabla。

class number2: number1 {

override init() {
    super.init()
    self.frame = CGRect(x: 400, y: 10, width: 196, height: 500)
}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

}

我正在这样做，但不知道如何删除 "blablabla"。最简单的方法是从 UIScrollView 继承 init 而不是 class number1。怎么做？

Answer 1

这里只是骨架，但应该足够了：

class number1: UIScrollView {
    init() {
        super.init()
        // Do stuff common to all classes
        setup()
    }

    func setup() {
        // Do stuff for this class
    }
}


class number2: number1 {
    override func setup() {
        // Do stuff for this class only
    }
}

Swift class 多重继承

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